Improved mode of securing glass vessels to metal bases



UNITED STATES PATENT QEEICE.

IMPROVED MODE OF SECURING GLASS VESSELS TO METAL BASES.

Specification forming part of Letters Patent No. 105,061. dated July 5, 1870.

To all whom t may concern Bo it known that I, ALONZO FRENCH, of Philadelphia, county of Philadelphia, State of Pennsylvania, have invented an Improvement in Securing Glass Vessels to Metal Bases, Supports, Stands, 8vo., of which the following is a specification My invention consists of a glass vessel, above or within the base of which is formed a screw-thread, as described hereinafter.

The main object of my invention is to afford simple and effective means of securing glass vessels, whether they consist of inkstands, fountains of lamps, or other objects, to bases, stands, supports, and especially such as can be made of thin sheet metal, in the manner described hereinafter.

Referring to the accompanying drawing, Figure 1 is a view, partly in section, of a glass vessel made in accordance with my invention for attachment to bases, stands, supports, 8vo.; Fig. 2, a sectional view of a sheetmetal base for receiving the glass vessel; Fig. 3, an exterior view of the vessel and base combined; Fig. 4, a view representing the vessel adapted to a modied form of base; Fig. 5, the vessel adapted to the detachable base of a lamp or lantern; Fig. 6, the vessel representing the reservoir of a lamp, and illustrated as applied to a suspension-wire; and Fig. 7 represents a modification of my invention.

The vessel shown in Fig. l may be supposed to represent an inkstand of the simplest form, as far as the upper portion of the vessel A is concerned.

On the exterior of lthe lower closed portion a of the vessel, however, is formed a screwthread, which, in the present instance, is con tinuous, but which may be made in sections of a screw-thread, the latter, as will be rendered apparent hereinafter, being the equivalents of a continuous thread.

The vessel thus constructed is in a condition for being secured, by a screw-like action, to a base, stand, or support of any material in which an internal thread for recciving the threaded portion of the vessel can be conveniently formed. l prefer, however, to make the base of sheet-zinc, or other thin metal or alloy, of a character which will admit of being shaped by what is known as the spinning process, the thread being formed by the pressure of the metal into the spaces between the internal threads of jawlike dies, or those of screw-taps or dies, in a manner too well known to need a minute description here. Reference may be made, however, to the machine for which Letters Patent were granted to S. B. Rowley, September 21, 1869, the said machine having been especially constructed for forming screwthreads on thin metal by pressure.

Fig. 2, for instance, represents such a base, struck up from a fiat disk of sheet metal, the central'cylindrioal recess b of this base having a screw-thread formed in it, in the manner described, for receiving the threaded portion of the vessel, so that, to secure the latter in its place, all that is necessary is to screw it down into the recess of the base, and, in doing this, the metal will yield to any slight irregularities which may occurv on the glass thread, for which reason I prefer thin metal.

The vessel thus united to the base will form a cheap and steady inkstand; 0r, if the vessel A be viewed as the reservoir or fountain of a lamp, and a burner be attached to the neck, as shown by dotted lines in Fig. 3, and the base be furnished with a suitable handle, we shall have a cheap and suitable handlamp.

In Fig. 4 the sheet-metal base is of a somewhat diiferent form, which may be adopted when the vessel, as the reservoir or fountain of a lamp, has to be suspended by wires or otherwise.

In Fig. 5 the base represents the detachable bottom of a lanternor bracket-lamp; and in Fig. 6 the vessel, representing the reservoir of a lamp, is adapted to the spirallycoiled end of' a suspension-wire, D.

In some cases an internal screw-thread may be formed in a recess, y, in the base of the glass vessel, as shown in Fig. 7, and this plan may be adopted in the reservoirs of lamps, so that the latter may be screwed onto the threaded tops of stands or pillars; or this plan may be adopted when the vessel has to be attached to a sheet-metal base, m, In testimony whereof' I have signed my which, however, has a cylindrical threaded name to this specieation in the presence of projection, n, in place of the threaded recess two subscribing witnesses.

Show .in Fig- 2- ALONZO FRENCH.

I clalml Y A glass vessel, above or within the closed Witnesses:

base of which is formed a screw-thread, for JOHN WHITE,

the purpose specified. HARRY SMITH. 

